.dead-line {
    position: relative;
    width: 550px;
    text-align: center;
}

.dead-line::before, .dead-line::after {
    content: '';
    position: absolute;
    top: 50%;
    height: 1px;
    width: 200px;
    background: #ccc;
}

.dead-line::before {
    left: 0;
}

.dead-line::after {
    right: 0;
}

.read-only {
    position: relative;
}

.read-only:after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #ddd;
    opacity: .5;
}